Upgrade vulnz to 6.1.2 (#1406)

Author: acoburn

.github/workflows/nvd-cache.yml

@@ -17,7 +17,7 @@ jobs:
       with:
         repository: jeremylong/Open-Vulnerability-Project
         path: ovp
-        ref: v6.0.0
+        ref: v6.1.2
 
     - name: Set up JDK 17
       uses: actions/setup-java@v4